Foundations of Physics: Concepts, Laws and Applications is a comprehensive resource that introduces the principles of physics in a well-organised and engaging manner. It has been written with the intention of making the subject approachable while maintaining scientific rigour. The book balances conceptual clarity with mathematical treatment, ensuring that learners develop both theoretical knowledge and practical skills. The text begins with the basics of physical science, covering physical quantities, measurement, and the role of vectors in describing motion. It then moves to the laws of motion and work, explaining Newton’s principles, friction, energy, and efficiency of machines. The following chapter addresses the properties of matter and fluids, highlighting elasticity, pressure, buoyancy, and fluid flow. Building on this, heat and thermodynamics are introduced through discussions on temperature, modes of heat transfer, calorimetry, and the laws governing energy transformation. The book also explores waves, sound, and light, including optical phenomena and the functioning of instruments such as microscopes and telescopes. Finally, electricity and magnetism provide insights into circuits, resistance, electromagnetism, and safety in household applications. Each topic is explained with clarity, supplemented by diagrams, examples, and practice problems. The emphasis on real-life applications ensures that learners can appreciate physics as a living subject with practical relevance. By the end of this book, readers will gain not only a solid grasp of physical laws but also the ability to apply them in scientific, technological, and everyday contexts.